Joe Calzaghe has often stated that he only does old school style training. Runs six miles a day on flat surfaces and hills. Hits the pads and bags, spars, and does calisthenics. Pushups, pullups, situps. He has stated that he never does any sort of weight lifting. In other words trains like the all time greats. With this sort of training, he is never tired, throws 100 plus punches per round, has tremendous speed and is very flexible and mobile. He never loses. He also consistently defeats fighters that train with so called modern methods. e.g., Kessler lifts weights and uses machines, ditto for Manfredo, Lacy and Bika, etc. Could it be that all the nonsense about not running long distances and using weights that is espoused on this site by many is just pure nonsense from "trainers" that have never stepped in ring?